diff --git a/importexport/inc/class.importexport_definition.inc.php b/importexport/inc/class.importexport_definition.inc.php
index 8626819bf8..ad3399d3a5 100644
--- a/importexport/inc/class.importexport_definition.inc.php
+++ b/importexport/inc/class.importexport_definition.inc.php
@@ -193,10 +193,12 @@ class importexport_definition implements importexport_iface_egw_record {
 	 *
 	 * @param array $options
 	 */
-	private function set_options(array $_plugin_options) {
+	private function set_options(array $_plugin_options)
+	{
 		// Check conditions
-		foreach ( (Array)$_plugin_options['conditions'] as $key => $condition ) {
-			if(!$condition['string'] && array_key_exists($key, $_plugin_options['conditions']))
+		foreach ((array)$_plugin_options['conditions'] as $key => $condition)
+		{
+			if (is_array($condition) && empty($condition['string']) && array_key_exists($key, $_plugin_options['conditions']))
 			{
 				unset($_plugin_options['conditions'][$key]);
 			}